The princess is out at the moment. If you're here to kidnap her, press one. If you're here to usurp the throne, press two. If you're here for a tea party, please hold. If you're here just to harass the guards, go ahead; we're all really bored out here and we've got this endless supply of bombs to throw at people.

No, I wouldn't call it hard; there are plenty of people who sketch directly in the computer with a tablet, and sometimes I do too. I just find it more convenient to grab a pencil and a sheet of paper on a whim, so a lot of my sketches end up being made on paper. I'd say it's a personal preference.